Abstract : This report results from a contract tasking P. N. Lebedev Physical Institute, Samara branch as follows: The contractor will investigate the cost and present a detailed design to increase the flow rate in the laser system to 0.10 mole/sec of chlorine with He diluent. He will also perform experiments with 8 M, 6 M, and 4 M BHP at -20, -10, and 0 C to determine optimum mirror reflectivities and iodine and diluent flow rates.